The conclusion of the text is that “it cannot be transmitted easily between people. Influenze virus can mutate and thus possibly chagne the way i which they infect victims”.
A – Wrong
The text clearly says that it cannot easily be transmitted from one perosn to another. So saying that many more people will catch the strain is wrong.
B – Wrong
We cannot say for sure that it will cause an epidemic. Also we are not sure that it will spread easily even if it mutated.
C – Correct
The only way for the strain to spread more easily is by mutation. So unless it mutates, the chance of an epidemic is unlikely.
D – Wrong
The text just says that is cannot be transmitted easily between people. So it can still be transmitted. Also, this is not the main idea of the text.